Philips V24CT User's Reference Manual page 256

Viewing Patient Data
Procedure to Insert a Calibration Pulse
Trends/Calcs
When you press
pulse appears in the displayed waves. The event label softkeys and the
screen, parameter numeric values are not collected and alarms are not
active. The calibration pulse will stay on the screen for the length of
time it takes a waveform to move across the screen. If the waveform is
fixed, the calibration pulse will be overwritten. The
under
examination of the waveform(s) and calibration signals.
Pressing
on that recording (in addition to the calibration wave that routinely
appears at the beginning of the recording).
The calibration pulse does not appear in the Vital Signs or Graphs
display.
8-18 Trends and Calculations
Cal Signals
Cal Signals softkey disappear. In the time period between the
Cal Signals
softkey being pressed and it disappearing from the
Change Screen
Cal Signals
Mark Event Cal Signals
, you'll hear a beep as the calibration
can be used to freeze the screen to allow close
during a recording produces a calibration pulse
Freeze Waves key